After 100 years of disappearance, the "Wolverine" in the United States has reappeared. Why can extinct creatures be resurrected?
In the 19th century, after years of research, a great biologist proposed the survival law of all animals and plants in nature, that is, natural selection. We can also understand natural selection as "natural selection, survival of the fittest", and only species that adapt to environmental changes can stay in their original habitats. If a species cannot adapt to changes in the environment, they end up with only two outcomes, either extinction or migrating to other more suitable habitats.